Once i get above 20 psi this thing leaks like crazy. I pulled it out and notice there is a black o ring on the inside. Where the hell do i described getting this little o ring or should i just rtv the damn thing. thanks

 

The common leak there is your shaft seals... search for mil.spec throttle body shaft seals...

 

I know that is wrong as I've replace the shaft seals already. The shaft seals are in the throttle plate area

https://www.evolutionm.net/forums/ev...aft-seals.html


anyone else? I'm about to get tuned and want this fixed.

 

If you're sure it's not your shaft seals replace the throttle body.

 

So i went to autozone and bought a o-ring kit and guess what the size oring i needed was in it.

some crazy responses in here.


Biss Screw O-ring is what it was after long searching only on the 03/04 VIII models

 

So that fixed it?

 

Those flapper deals leak worse than the shaft seals, I've replaced more than a few o-rings on there. I put a thin coat of DP or Blue on them to help them last longer.
I've never seen one like that which didn't have a screw holding it in though. Unless the screw is missing and the picture just looks weird.